package com.mju.byc.config;

import com.mju.byc.dao.PermissionRepository;
import com.mju.byc.dao.UserRepository;
import com.mju.byc.entity.User;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.security.config.annotation.ObjectPostProcessor;
import org.springframework.security.config.annotation.authentication.builders.AuthenticationManagerBuilder;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
import org.springframework.security.core.userdetails.UserDetails;
import org.springframework.security.core.userdetails.UserDetailsService;
import org.springframework.security.core.userdetails.UsernameNotFoundException;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
import org.springframework.security.crypto.password.PasswordEncoder;
import org.springframework.security.web.access.intercept.FilterSecurityInterceptor;

@Configuration

public class WebSecurityConfig extends WebSecurityConfigurerAdapter {
    @Autowired
    UserRepository userRepository;
    @Autowired
    PermissionRepository permissionRepository;
    @Bean
    PasswordEncoder passwordEncoder(){
        return new BCryptPasswordEncoder();
    }

    @Override
    protected void configure(AuthenticationManagerBuilder auth) throws Exception {
        UserDetailsService userDetailsService = new UserDetailsService() {
            @Override
            public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException {
                User user = userRepository.findByUsername(username);
                if(user==null) throw new UsernameNotFoundException("用户不存在");
                return userRepository.findByUsername(username);
            }
        };
        auth.userDetailsService(userDetailsService);
    }
    //  /admin/hello
    //  /admin/**

    @Override
    protected void configure(HttpSecurity http) throws Exception {
        http.authorizeRequests()
                //         .withObjectPostProcessor()
                .withObjectPostProcessor(new ObjectPostProcessor<FilterSecurityInterceptor>() {

                    @Override
                    public <O extends FilterSecurityInterceptor> O postProcess(O object) {
                        object.setSecurityMetadataSource(new CustomFilterInvocationSecurityMetadataSource(permissionRepository));
                        object.setAccessDecisionManager(new MyAccessDecisionManager());
                        return object;
                    }
                })

                .anyRequest().authenticated()
                .and()
                .formLogin()
                .loginProcessingUrl("/login").permitAll()
                .and()
                .csrf().disable()
        ;
    }
}